Am 22.05.2012 21:52, schrieb Greg Farnum:
On Tuesday, May 22, 2012 at 12:40 PM, Stefan Priebe wrote: Huh. That's less than I would expect. Especially since it ought to be going through the page cache. What version of RBD is KVM using here?
Can you (from the KVM host) run "rados -p data bench seq 60 -t 1" "rados -p data bench seq 60 -t 16" and paste the final output from both?
OK here it is first with write then with seq read. # rados -p data bench 60 write -t 1 # rados -p data bench 60 write -t 16 # rados -p data bench 60 seq -t 1 # rados -p data bench 60 seq -t 16 Output is here: http://pastebin.com/iFy8GS7i Thanks! Stefan -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html